Pneumatic tire for wheels of vehicles.



A. MIGHELIN.

PNEUMATIG TIRE FOR WHEELS 0F VEHICLES. APPLICATION FILED DEG. so, 1907.

PATENT-ED JUNE 23, 1908.

ANDRE MIOHELIN, OF PARIS, FRANCE.

PNEUMATIC TIRE FOR WHEELS OF VEHICLES.

Specification of Letters Patent.

Patented time 23, 1908.

Application filed December 30, 1907. Serial No. 408,475.

To all whom it may concern.-

Be it known that I, ANDRE MICHELIN, citizen of the Republic of France, and resident of 105 Boulevard P reirgv Paris,-in the said Republic, engineerfhave invented a new and useful Improvement in Pneumatic Tires for Wheels of Vehicles, of which the following is a specification. I

The invention relates to an improvement in the safetybolts serving to prevent the displacement of the outer cover of tires on the rim of wheels, and this improvement, which is equally applicable both in the caseof fixed rims and of detachable rims,- consists essentlally in, the suppression of one of the two wings of such bolts, so that they only secure one edge of the cover, that which is situated on the side-nearest-the carriage. The great advantage of this arrangement is that of facilitating the fixing of .the cover and of the inner tube, and especially of enabling 'the" inner tube to be re laced without havingto remove the safety olts.

The invention, moreover, com rises details in the construction of safety olts with a single wing, as well as the method of mounting same on a fixed or a detachable rim.

In the accompanying drawing, Figure 1 shows a transversesection of a tire for a detachable rim, the section being taken through the axis of one of the safety bolts. Figs. 2 and 3 are detached views of the'improved safety bolt, in side elevation and plan respectively. Fig. 4 is a transverse section of a tire for'a fixed rim, taken through the axis of one. ofthe'single wing safety bolts, the bolt being shown in side elevation in Fig. 5 and in plan in Fig. 6.

As will be seen in these figures, the head a of the safety bolt, both for detachable rims and for ordinary wheels, is provided with a single wing 1) bearing upon the edge of the cover situated nearest the carriage. In the case of a detachable rim, an'oif-set c is formed in the centerof the head a, so as to raise the point of attachment of" the short bolt d, which is preferably'securedin this head by means of a collar and a riveted upper end. The tightening nut e is caused to bear against the inner. face of the detachable rim, audit is formed with a circular part passing through anopenin in such rim, so as to au merit the number 0 threads en a ed. In t e case of fixed rims, the safety 0 ts have-a long stem (1 connectedtto the head a as shown in Figs. 4, 5 and 6, and preferably passingthrough a sleevef (Fig; 4), terminating in a chamf'ered collar g bedding into the wooden rim and against which. bears the thumb or winged nut e.

What I claim-as my invention and desire to secureby Letters Patent, is

1. A- bolt for maintaining in position on the rim of' awheel one edge only of the outer cover of a pneumatic tire, composed: of a screw-threaded stem; a plate fixed perpendicularly on the extremity of this stem; a

,wing formed on this plate, inclined at an angle suitable for bearing against one of the edges of the cover of the tire; and of a nut screwing'on to the said stem.

2. -A bolt for maintaining in positionv on the rim of a wheel one edge only of the outer cover of a pneumatic tire, composed: of a 'screw threaded stem; a plate fixed perpendicularly on the extremity of this stem and raised at the part where the said stem is attached; a Wing on this-plate, inclined at an angle suitable for bearing against one of the edges of the cover of the tire; and ofa nut provided with a cylindrical extension capable of entering an opening formed in the rim.

In testimony that I claimthe foregoing as my invention, I have signed my name in presence of two witnesses, this'sixteenth day of December 1907.

ANDRE MICHELIN. Witnesses:

HANsoN C. Coxn, ALOIDE FABE; 

